<template>
    <div>
        <div style="margin-bottom: 5px">
            <el-input v-model="name" placeholder="请输入图片名称" suffix-icon="el-icon-search" style="width: 200px"
                @keyup.enter.native="loadPost"></el-input>
            <el-button type="primary" style="margin-left: 8px" @click="loadPost">查询</el-button>
            <el-button type="success" @click="resetParam">重置</el-button>
            <el-button type="primary" style="margin-left: 8px" @click="add">新增</el-button>
        </div>
        <el-table :data="tableData" :header-cell-style="{ background: '#c1c4c9', color: '#555' }" border>
            <el-table-column prop="id" label="ID" width="60">
            </el-table-column>
            <el-table-column prop="name" label="图片名称" width="120">
                </el-table-column>
            <el-table-column prop="lunbo" label="图片" width="650">
                <template slot-scope="scope">
                    <img :src="scope.row.lunbo" style="width: 120px;height: 66px;border-radius: 5%;" />
                </template>
            </el-table-column>
            
            <el-table-column prop="operate" label="操作">
                <template slot-scope="scope">
                    <el-button size="small" type="success" @click="mod(scope.row)">编辑</el-button>
                    <el-popconfirm title="确定删除吗？" @confirm="del(scope.row.id)" style="margin-left: 5px">
                        <el-button slot="reference" size="small" type="danger">删除</el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页-->
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="pageNum"
            :page-sizes="[5, 10, 20, 30]" :page-size="pageSize" layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>

        <!--新增-->
        <el-dialog title="提示" :visible.sync="centerDialogVisible" width="30%" center>

            <el-form ref="form" :rules="rules" :model="form" label-width="80px">
                <el-form-item label="图片名称" prop="name">
                    <el-col :span="20">
                        <el-input v-model="form.name"></el-input>
                    </el-col>
                </el-form-item>
                <el-form-item label="图片" prop="lunbo">
                    <el-upload class="avatar-uploader" action="http://localhost:8090/common/upload?module=cover"
                        :show-file-list="false" :on-success="handleCoverSuccess">
                        <img v-if="form.lunbo" :src="form.lunbo" class="avatar" style="width:250px;height:150px;">
                        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
                    </el-upload>
                </el-form-item>
            </el-form>

            <span slot="footer" class="dialog-footer">
                <el-button @click="centerDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="save">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    name: "LunboManage",
    data() {
        return {
            tableData: [],
            pageSize: 10,
            pageNum: 1,
            total: 0,
            name: '',
            lunbo: '',
            centerDialogVisible: false,
            form: {
                id: '',
                name: '',
                lunbo: '',
            },
            rules: {
                name: [
                    { required: true, message: '请输入图片名称', trigger: 'blur' },
                ],
                lunbo: [
                    { required: true, message: '请上传图片', trigger: 'blur' },
                ],
            },
        }
    },
    //跨域问题
    methods: {
        //封面上传
        handleCoverSuccess(res, file) {
            this.form.lunbo = `http://localhost:8090/common/download?name=${res.content}`
            //手动触发一下头像字段的校验
            // this.$refs.formName.validateField("cover")
            //强制刷新一下
            this.$forceUpdate();
        },
        //重置表单数据
        resetForm() {
            this.$refs.form.resetFields();
        },
        //修改
        mod(row) {

            //展示到表单
            this.centerDialogVisible = true
            this.$nextTick(() => {
                // 赋值到表单
                this.form.id = row.id
                this.form.name = row.name
                this.form.lunbo = row.lunbo
            })
        },

        //删除
        del(id) {
            console.log(id)

            this.$axios.get(this.$httpUrl + '/lunbo/del?id=' + id).then(res => res.data).then(res => {
                console.log(res)
                if (res.code == 200) {
                    this.$message({
                        message: '删除成功',
                        type: 'success'
                    });
                    this.loadPost()
                } else {
                    this.$message({
                        message: '删除失败',
                        type: 'error'
                    });
                }
            })
        },

        // 新增
        add() {
            this.centerDialogVisible = true
            this.$nextTick(() => {
                this.resetForm();
            })
        },
        doSave() {
            // this.data.cover = this.cover;
            this.$axios.post(this.$httpUrl + '/lunbo/save', this.form).then(res => res.data).then(res => {
                console.log(res)
                if (res.code == 200) {
                    this.$message({
                        message: '新增成功',
                        type: 'success'
                    });
                    this.centerDialogVisible = false
                    this.loadPost()
                    this.resetForm()
                } else {
                    this.$message({
                        message: '新增失败',
                        type: 'error'
                    });
                }
            })
        },
        doMod() {
            // this.data.cover = this.cover;
            this.$axios.post(this.$httpUrl + '/lunbo/update', this.form).then(res => res.data).then(res => {
                console.log(res)
                if (res.code == 200) {
                    this.$message({
                        message: '修改成功',
                        type: 'success'
                    });
                    this.centerDialogVisible = false
                    this.loadPost()
                    this.resetForm()
                } else {
                    this.$message({
                        message: '修改失败',
                        type: 'error'
                    });
                }
            })
        },
        save() {
            this.$refs.form.validate((valid) => {
                if (valid) {
                    if (this.form.id) {
                        this.doMod();   //如果检测到id就为修改，否则增加
                    } else {
                        this.doSave();
                    }
                } else {
                    console.log('error submit!!');
                    return false;
                }
            });
        },
        //分页
        handleSizeChange(val) {
            console.log(`每页 ${val} 条`);
            this.pageNum = 1
            this.pageSize = val
            this.loadPost()
        },
        handleCurrentChange(val) {
            console.log(`当前页: ${val}`);
            this.pageNum = val
            this.loadPost()
        },
        // 重置
        resetParam() {
            this.name = ''
        },
        loadPost() {
            this.$axios.post(this.$httpUrl + '/lunbo/listPage', {
                pageSize: this.pageSize,
                pageNum: this.pageNum,
                param: {
                    name: this.name,
                }
            }).then(res => res.data).then(res => {
                console.log(res)
                if (res.code == 200) {
                    this.tableData = res.data
                    this.total = res.total
                } else {
                    alert('获取数据失败')
                }

            })
        }
    },
    beforeMount() {
        this.loadPost();
    }
}
</script>

<style scoped>
.avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;

}

.avatar-uploader .el-upload:hover {
    border-color: #409EFF;
}

.avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
}

.avatar {
    width: 178px;
    height: 178px;
    display: block;
    /* border: 1px solid black; */
}
</style>